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Chapter C
Antenna Kits and Accessories
GPS Antenna
Symmetricom offers GPS antennas which are compatible with most commercial
GPS receivers, receive, amplify, and filter the L1 (1575.42 MHz) signal from GPS
satellites. The antenna is housed in a weatherproof package suitable for permanent
installation in an exposed location. For additional transient eliminator protection
requirements, you can install a 250B-90 Gas Tube transient eliminator in series with
the antenna coaxial cable.
The cable between the antenna and the TimeProvider 100 cable should be kept to
the shortest reasonable length. Before using additional cables, verify that the total
antenna system gain is acceptable as described in the
Antenna
section of Appendix C. The tables listed below provide information about
the antenna:
Table C-1
Table C-2
Table C-3
accessories available for the GPS series antennas.
Table C-1. GPS Antennas with Internal LNA
Part Number
990-00075-000
Table C-2
provides specifications for GPS antennas.
Table C-2. Specifications for GPS Antennas
Characteristic
Mounting
Diameter
Height
Weight
Temperature
Relative Humidity
Altitude
108 TimeProvider 100 User's Guide
lists the item number and provides a brief description of the antenna.
provides specification information for GPS antenna with internal LNA.
lists the item numbers and provides a brief description of the antenna
30 dB Antenna with transient eliminator
4 holes, 1.69 in x 1.69 in (4.3 cm x 4.3 cm) centers,
0.13 in (0.400 cm) mounting holes
3.54 in (90 mm)
17.83 in (453 mm), including pipe mount
< 1.5 lbs (0.7 kg)
–40 C to +85 C
100% Non-Immersed
200 ft. (60 m) below sea level to 13,000 ft. (3962 m) above sea level
Selecting the Proper Gain
Description
Specification
Mechanical
Environmental
Electrical
098-00106-000 Revision A – March, 2009
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